Added basic event based handler.
Added basic event based handler.

thrasher-/gocryptotrader,snipesjr/gocryptotrader,thrasher-/gocryptotrader,thrasher-/gocryptotrader,jmaurice/gocryptotrader,snipesjr/gocryptotrader,thrasher-/gocryptotrader,thrasher-/gocryptotrader,dolanor/gocryptotrader,snipesjr/gocryptotrader,snipesjr/gocryptotrader